When the "Insert and overwrite aequences as nests or individual clips" button is turned OFF, and multiple sequences are dragged and dropped into a timeline, Premire Pro loses the transitions.
This is not just on the beta, but on previous verions too.
In the screen shot with a small selection of clips, there is a slide transition and audio transitions.
In the second screen shot with a larger selecttion of clips (dragged from two sequences onto the timeline), you can see than the transitions are discarded.
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